The Testament of Sister New Devil

Season 1

TV-MA
When Basara Toujou's father suddenly brings home two beautiful girls and introduces them as his new siblings, he has no choice but to accept into his family the Naruse sisters: busty redhead Mio and petite silver-haired Maria.

But when these seemingly normal girls reveal themselves as demons—Mio the former Demon Lord's only daughter and Maria her trusted succubus servant—Basara is forced to reveal himself as a former member of a clan of "Heroes," sworn enemies of the demons. However, having begun to care for his new sisters, Basara instead decides to protect them with his powers and forms a master-servant contract with Mio to keep watch over her.

With the Heroes observing his every move and the constant threat of hostile demons, Basara has to do the impossible to protect his new family members. Moreover, the protector himself is hiding his own dark secret that still haunts him to this day...

12 Episodes

  • The Day I Got A Little Sister
    E1
    The Day I Got A Little SisterAfter Toujou Basara's father remarries, Toujou gains two step-sisters named Maria and Mio.
  • First Contract Between Servant And Master
    E2
    First Contract Between Servant And MasterAs daughter of the former demon lord, Mio's foster parents were slain by powerful demons after her life. Still seeking to slay her, Basara reveals himself as a member of the hero clan--an enemy of the demons--and vows to protect Mio as a member of his family.
  • Reunion and a Gap in Trust
    E3
    Reunion and a Gap in TrustBasara's childhood friend Nonaka Yuuki warns him not to get involved with Naruse Mio any longer. She is a fellow member of the hero clan, and the one charged with observing Mio. She claims that Mio will bring great disaster, but Basara proclaims that he will protect Mio as a girl on his own.
  • Until Sadness Reaches Zero
    E4
    Until Sadness Reaches ZeroBasara suffers a deep wound in the battle against the white-masked man after Mio's power. Mio regrets getting Basara involved, and challenges the white-masked man to battle on her own. Meanwhile, in order to protect Mio, Basara resolves to use the "forbbiden art" he sealed away after the events of his past. What was the tragedy that visited the hero village and Basara?
  • A Little Sister's Morning Demon Lording
    E5
    A Little Sister's Morning Demon LordingBasara's morning starts with Maria in his bed, followed by Mio and Yuki in the bathroom. The hero clan upgrades Mio's status to kill.
  • Bearing Growing Emotions
    E6
    Bearing Growing EmotionsBasara goes on a date with Yuki. Unaccustomed to the shopping center, when the two of them are overwhelmed by a clerk's sales talk, Mio stops following to rescue them.
  • The Depths of Love and Hatred
    E7
    The Depths of Love and HatredBasara leads Mio to higher peaks as he pursues pleasure with the use of syrup. With their master-servant pact reaching a new level, they both bring their full might to face the ones trying to eliminate Mio: Takashi and Kurumi.
  • Erotic Succubus Out of Control
    E8
    Erotic Succubus Out of ControlTen days pass since the battle with Takashi and others. Although the battle ended with reconciliation, Yuki returned to the hero's village. ...or she was supposed to, but when Basara returns home, he finds Yuki in an apron!
  • Merits and Demerits of Master and Servant
    E9
    Merits and Demerits of Master and ServantBasara and Yuki begin the ceremony to form their pact. Clad in a bustier and garter belt, Yuki was raring to go for it, but she refused to forge the pact normally, and suffered the same succubus curse as Mio.
  • Plaintive Betrayal
    E10
    Plaintive BetrayalMio has been captured by Zolgia following Maria's betrayal. Basara too is captured by Lars and brought to Zolgia's mansion. Lars' goal is to exchange Basara for Mio. He explains that he's only doing his duty as Mio's observer, but negotiations fail, and Zest slays him.
  • Epsionage... What Lies After
    E11
    Epsionage... What Lies AfterStrength as a human, the power to rend evil--With the power inherited from his father, Tojou Jin, Basara faces off against Zolgia. Basara is driven by the desire to protect his precious family. That desire gives him strength, and even as Zolgia pushes him to the edge, he rises without breaking. However, even Basara eventually runs out of strength facting that all too powerful might. His mind in despair, he's unable to escape from Zolgia's dominion...
  • For This Night, This Moment
    E12
    For This Night, This MomentEveryone is trapped inside the body of the demon realm's most dangerous creature, a beast capable of infinitely multiplying until it swallows the entire world. Dimensionally cut off, the only remaining option for Basara and the others is to completely eliminate this dangerous creature's vital core.

Cast of Season 1

  • Yuichi NakamuraBasara Tōjō (voice)
  • Ayaka AsaiMio Naruse (voice)
  • Kaori FukuharaMaria Naruse (voice)
  • Hisashi SaitoDirector
  • Takawo YoshiokaWriter
  • Tetsuto UesuWriter
  • Chiaki KurakaneProducer
  • Satoshi MotonagaProducer

 

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